The KOSEN Cast Steel Weir Type Diaphragm Valves has self draining function to ensure no residue and make the pipeline cleaner and healthier. The valve body has various materials, such as cast iron, ductile iron, cast steel, forged steel and lining. Lining materials include: Glass, ETFE, PFA, PVDF, Halar rubber, which can be specially processed according to needs. The unique valve cover patent design prevents the diaphragm from being too tight and the pressure is too high, so that the diaphragm is in normal working condition. The seal of the diaphragm can be zero leakage of the valve

The KOSEN Straight Through Diaphragm Valves is used to control non corrosive or general corrosive medium. The inner cavity surface of the valve body is unlined or covered with various kinds of rubber, suitable for different working temperature and liquid pipeline. Diaphragm valve is a special type of truncation valve, flexible seal open and closed, to ensure no leakage, streamlined flow channel, so that the pressure loss is small, no packing letter, so there is no leakage, the valve body and cover are separated by the middle diaphragm, so that the valve cover above the diaphragm, the valve stem and other zero parts are not eroded by the medium and the diaphragm can be replaced, The maintenance cost is low, the lining material is diverse, it can be applied to all kinds of media, and has the characteristics of high strength and good corrosion resistance.

The KOSEN Stainless Steel Thread Weir Diaphragm Valves is specially designed to control the general corrosive medium, and can be used for opening and closing and throttling of various pipelines or equipment. The lining valve is suitable for urban construction, chemical industry, metallurgy, petroleum, pharmaceuticals, food, beverages, and environmental protection.

The KOSEN Y Type Diaphragm Valves includes the valve body, the valve stem, the isolation ring, the diaphragm and the diaphragm cavity cover. The diaphragm is provided with a through hole on the top of the diaphragm, which is arranged in contact with the stem and can move along with the stem and extend the hole to the outside. The outer sleeve of the indicating rod is provided with a shaft sleeve, and the shaft sleeve is fixed on the inner wall of the through hole.

The Stainless Steel Diaphragm Valves and conventional valve structure and working principle are different, it is a self force structure, does not need external power supply wind, its work is done through the process medium (compressed air), compressed air through the throttle hole into the stainless steel diaphragm valve chamber.

The KOSEN Cast Steel Teflon Lined Diaphragm Valves is a special type of truncation valve. Its opening and closing is a diaphragm made of soft material. The inner cavity of the valve body is separated from the inner cavity of the valve cover and the driving part. The valve is characterized by the diaphragm separating the inner cavity of the lower body from the inner cavity of the upper valve cover, so that the valve rod and valve disc above the diaphragm are not corroded by the medium, and the packing seal structure is omitted and the medium leakage will not be produced.

The KOSEN Electric Actuator Diaphragm Valves is composed of a valve body, a valve cover, a valve stem, a disc, a diaphragm, an electric device and other driving parts.The opening and closing of the valve is driven by the connecting shaft of the electric device to drive the stem nut, so that when the valve rod moves axially, the valve flap can be driven up and down to achieve. When the power supply breaks down and the valve is in urgent need of opening and closing, the hand - electric handoff handle should be first converted to the manual marked position, and the flash door can be opened and closed through the rotating handwheel. When rotating clockwise, the valve can be turned off; otherwise, it will turn on. When the electric operation is resumed, the switch handle must be switched to the position marked with electric mark, so that the electric operation can be carried out.